粉煤灰的特性及其去除水中重金属的研究进展

Characteristics of Fly Ash and Its Study Progress in Removing Heavy Metals in Wastewater

粉煤灰具有来源广、结构孔隙率高、比表面积大等优点,被广泛用于污水处理过程。本文分析了粉煤灰的特性及其矿物组成,探讨了粉煤灰的吸附机理,阐述了利用粉煤灰去除水中重金属的现状,揭示了不同方法改性的粉煤灰吸附重金属的性能,明确了粉煤灰在去除水中重金属的应用价值,为今后用粉煤灰处理污水中重金属的深入研究奠定基础。

Fly ash had been widely used in the process of sewage treatment due to its wide source,high porosity structure,large surface area and so on. The characteristics and mineral composition of fly ash were analyzed in this paper. The adsorption mechanism of fly ash was discussed. The current situations of fly ash in removing heavy metals in wastewater was elaborated. The performance of different methods of modified fly ash adsorb heavy metals was announced. It has been cleared about the application value of fly ash in removing heavy metals,which lay the foundation for the comprehensive investigation of fly ash on heavy metals treatment in the future.